chore_assignments_controller.rb

require 'date'

class ChoreAssignmentController < ApplicationController
  def assign_todays_chore
    @users_chore_list.provide_todays_chore_to this
  end

  def todays_chore_is chore
    @assignment = chore
  end
end

class ChoreList
  def provide_todays_chore_to user
    user.todays_chore_is the_first_random_chore_I_can_find
  end

  def the_first_random_chore_I_can_find
    first_random_chore_found = @chore_list.where(:user_id => current_user.id, :date => today).first
    first_random_chore_found ||= @chore_list.create(:user => current_user, :chore => Chore.random, :date => today)

    first_random_chore_found
  end
end